linux: use user.js over prefs.js for Firefox #232
Manage Firefox preferences through `user.js` instead of `prefs.js`. Because of Mozilla's recommendation against direct `prefs.js` edits to avoid potential profile corruption. Instead, the `user.js` file, if present, overrides the settings in `prefs.js` at application startup. Change AddFirefoxPrefs function to update `user.js` and manage creation/deletion of this file: 1. Handle file creation if `user.js` does not exist. 2. Deletes file if `user.js` becomes empty after reverting settings. Other changes: - Improve log messages - Minimal refactorings
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undergroundwires
@@ -3558,82 +3558,98 @@ functions:
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parameters:
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- name: prefName
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- name: jsonValue
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# prefs.js file (https://web.archive.org/web/20221029211757/https://kb.mozillazine.org/Prefs.js_file) exists at
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# - Default installation:
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# ~/.mozilla/firefox/<profile-name>/prefs.js
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# - Flatpak installation:
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# ~/.var/app/org.mozilla.firefox/.mozilla/firefox/<profile-name>/prefs.js
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# - Snap installation:
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# ~/snap/firefox/common/.mozilla/firefox/<profile-name>/prefs.js
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docs: |-
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This script either creates or updates the `user.js` file to set specific Mozilla Firefox preferences.
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The `user.js` file can be found in a Firefox profile folder [1] and its location depends on the type of installation:
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- Default: `~/.mozilla/firefox/<profile-name>/user.js`
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- Flatpak: `~/.var/app/org.mozilla.firefox/.mozilla/firefox/<profile-name>/user.js`
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- Snap: `~/snap/firefox/common/.mozilla/firefox/<profile-name>/user.js`
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While the `user.js` file is optional [2], if it's present, the Firefox application will prioritize its settings over
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those in `prefs.js` upon startup [1][2]. To prevent potential profile corruption, Mozilla advises against editing
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`prefs.js` directly [2].
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[1]: https://web.archive.org/web/20230811005205/https://kb.mozillazine.org/User.js_file "User.js file - MozillaZine Knowledge Base"
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[2]: https://web.archive.org/web/20221029211757/https://kb.mozillazine.org/Prefs.js_file "Prefs.js file - MozillaZine Knowledge Base"
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code: |-
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pref_name='{{ $prefName }}'
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pref_value='{{ $jsonValue }}'
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echo "Setting preference \"$pref_name\" to \"$pref_value\"."
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pref_file_paths=(
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~/.mozilla/firefox/*/prefs.js
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~/.var/app/org.mozilla.firefox/.mozilla/firefox/*/prefs.js
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~/snap/firefox/common/.mozilla/firefox/*/prefs.js
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declare -a profile_paths=(
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~/.mozilla/firefox/*/
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~/.var/app/org.mozilla.firefox/.mozilla/firefox/*/
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~/snap/firefox/common/.mozilla/firefox/*/
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)
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declare -i total_files_found=0
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for pref_file in "${pref_file_paths[@]}"; do
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if [ -f "$pref_file" ]; then
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((total_files_found++))
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echo "$pref_file:"
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pref_start="user_pref(\"$pref_name\","
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pref_line="user_pref(\"$pref_name\", $pref_value);"
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if ! grep --quiet "^$pref_start" "${pref_file}"; then
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echo $'\t'"Preference is not configured before."
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echo -n $'\n'"$pref_line" >> "$pref_file"
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echo $'\t'"Successfully configured."
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else
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if grep --quiet "^$pref_line$" "${pref_file}"; then
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echo $'\t'"Skipping. Preference is already configured as expected."
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else
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sed --in-place "/^$pref_start/d" "$pref_file"
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echo $'\t'"Deleted assignment with unexpected value."
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echo -n $'\n'"$pref_line" >> "$pref_file"
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echo $'\t'"Successfully reconfigured with expected value."
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fi
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fi
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declare -i total_profiles_found=0
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for profile_dir in "${profile_paths[@]}"; do
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if [ ! -d "$profile_dir" ]; then
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continue
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fi
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if [[ ! "$(basename "$profile_dir")" =~ ^[a-z0-9]{8}\..+ ]]; then
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continue # Not a profile folder
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fi
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((total_profiles_found++))
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user_js_file="${profile_dir}user.js"
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echo "$user_js_file:"
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if [ ! -f "$user_js_file" ]; then
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touch "$user_js_file"
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echo $'\t''Created new user.js file'
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fi
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pref_start="user_pref(\"$pref_name\","
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pref_line="user_pref(\"$pref_name\", $pref_value);"
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if ! grep --quiet "^$pref_start" "${user_js_file}"; then
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echo -n $'\n'"$pref_line" >> "$user_js_file"
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echo $'\t'"Successfully added a new preference in $user_js_file."
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elif grep --quiet "^$pref_line$" "$user_js_file"; then
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echo $'\t'"Skipping, preference is already set as expected in $user_js_file."
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else
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sed --in-place "/^$pref_start/c\\$pref_line" "$user_js_file"
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echo $'\t'"Successfully replaced the existing incorrect preference in $user_js_file."
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fi
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done
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if [ "$total_files_found" -eq 0 ]; then
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echo "No changes, no preference file is found."
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if [ "$total_profiles_found" -eq 0 ]; then
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echo 'No profile folders are found, no changes are made.'
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else
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echo "Ensured that $total_files_found profiles are compilant."
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echo "Preferences verified in $total_profiles_found profiles."
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fi
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revertCode: |-
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pref_name='{{ $prefName }}'
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pref_value='{{ $jsonValue }}'
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echo "Restoring \"$pref_name\" to its default."
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pref_file_paths=(
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~/.mozilla/firefox/*/prefs.js
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~/.var/app/org.mozilla.firefox/.mozilla/firefox/*/prefs.js
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~/snap/firefox/common/.mozilla/firefox/*/prefs.js
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echo "Reverting preference: \"$pref_name\" to its default."
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declare -a profile_paths=(
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~/.mozilla/firefox/*/
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~/.var/app/org.mozilla.firefox/.mozilla/firefox/*/
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~/snap/firefox/common/.mozilla/firefox/*/
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)
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declare -i total_files_found=0
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for pref_file in "${pref_file_paths[@]}"; do
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if [ -f "$pref_file" ]; then
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((total_files_found++))
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echo "$pref_file:"
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pref_start="user_pref(\"$pref_name\","
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pref_line="user_pref(\"$pref_name\", $pref_value);"
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if ! grep --quiet "^$pref_start" "${pref_file}"; then
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echo $'\t'"Skipping. Preference is not configured before."
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else
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if grep --quiet "^$pref_line$" "${pref_file}"; then
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sed --in-place "/^$pref_line/d" "$pref_file"
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echo $'\t'"Successfully restored preference value to its default."
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else
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echo $'\t'"Skipping, the preference has value that is not configured by privacy.sexy."
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fi
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declare -i total_profiles_found=0
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for profile_dir in "${profile_paths[@]}"; do
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user_js_file="${profile_dir}user.js"
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if [ ! -f "$user_js_file" ]; then
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continue
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fi
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((total_profiles_found++))
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echo "$user_js_file:"
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pref_start="user_pref(\"$pref_name\","
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pref_line="user_pref(\"$pref_name\", $pref_value);"
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if ! grep --quiet "^$pref_start" "${user_js_file}"; then
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echo $'\t''Skipping, preference was not configured before.'
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elif grep --quiet "^$pref_line$" "${user_js_file}"; then
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sed --in-place "/^$pref_line/d" "$user_js_file"
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echo $'\t''Successfully reverted preference to default.'
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if ! grep --quiet '[^[:space:]]' "$user_js_file"; then
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rm "$user_js_file"
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echo $'\t''Removed user.js file as it became empty.'
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fi
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else
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echo $'\t''Skipping, the preference has value that is not configured by privacy.sexy.'
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fi
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done
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if [ "$total_files_found" -eq 0 ]; then
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echo "No changes, no preference file is found."
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if [ "$total_profiles_found" -eq 0 ]; then
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echo 'No reversion was necessary.'
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else
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echo "Ensured that $total_files_found profiles are compilant."
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echo "Preferences verified in $total_profiles_found profiles."
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fi
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-
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name: RenameFile
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